allerton



G. M. ALLERTON.

Inflated Rubber Articles.

Patented July 14, 1868.

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GEORGE M. 'ALLERTON, or NEW YORK, N. Y.

Letters Patent No. 79,933, dated July 14-, 1 868.

iMPsovEMsnrm INFLATED RUBBER spots.

sustain trirmt in in flgtsr fitttters fitted mm mating and rt tin same.

. k TO ALL WHOMI'I MAY CONCERN:

I Bc it known that I, GEORGE M. ALLERION, of the city and State of New York, have invented and made a certain ncwand useful Improvement in Hollow orInflated India-Rubber Goods; and I do hereby declare the following to be a full, clear, and exact description of the nature of the said invention, reference being had to the annexed drawing, making part of this specification.

' Heret'ofore, India-rubber goods have been made so as to be inflated to form life-preservers, and air-balls,

anda variety of articles, such as cushions, pillows, 8120. In all such articles heretofore made, the India rubber in its native or cured state has'composed the article, and, in many instances, has been expanded by the pressure of air-for allowed tocollapsc when that pressure is allowed to escape. i

In other instances, such inflated goods have becnmadc of India-rubber cloth. In the first-named instances, the India rubber is liable to tear and break by suddenstrain, or in consequence of wear when in use. Inthe last-named class of articles, the woven fabric or stockinet is exposed to heat in curing the India rubber, and thereby injured, and rendered weal: and liable to break. Besides this, any color applied to the woven fabric or the surface of such goods as an ornament, is liable to become injured by the heat. I

The nature of my said invention consists in an India-rubbcr bag, or other articleto beintlated or distended, in combinatibn with aseparate corering of cloth, felt, or similar material, that supports the rubber fabric, and prevents injury to the same by the pressure or by wear, and such covering, not having been exposed to heat, retains its original strength and color, and the rubber, being separate, can be cured by heat in the most perfect manner. l I v i I My invention is applicable to air-pillows, balls, cushions, life-prescrvers, buoys, water-bags, sacks, hose, and otherarticles. A ball constructed on the plan herein described is exceedingly well adapted to stopping the flow of water or gas in large pipes, when required for repairs or other purposes. It can be inserted into the pipe through a comparatively small hole, and then expanded by water or air so as to completely fill the pipe, and thus stop all passage for the flow of water or gas.

Without the canvas covering, the rubber bag would elongateand burst before it .could lie made to exert any great pressure against the sides of the pipe. If made ofrnbber and cloth, and vulcanized in the usual way, the fibres of the canvas havingbeen weakened by the vulcanizing process, the ball would burst under a moderate pressure. But with a rubber bag made separate, and used to expands. strong canvas cover unweaktamed by heat, the flow of water, under any ordinary pressure, can be readily and effectually stopped.

I have shown'in the drawing, fig. 1, a section of an air-ball in collapsed condition. In this (t represents the rubber air-bag, and the casing or coveringyof woven fibrous material.

In fig. 2, a portion of an air-ball is shown in a distended condition, the India rubber, a, being withinand supported by the covering 6. W

Heretol'orc, it hasbeen usual to employ metal a'ii valves at the place where the air is forced in. These, however, are very liable to leak, either at the valve-seat, or where the rubber is fastened to the metal.

I employ an India-rubber tube for inflating the air-bag. This is attached to said air-bag, and the parts I vulcanized together. This tube is sufiiciently long to be easily applied to the mouth for inflating the air-bag,

and by making one or two folds in said tube, the same becomes secure against-the escape of the gas. I have shown in fig. 2 the air-tube folded and tucked under the cover Z). The said tube is shown in red lines, in position for inflating. I

What I claim, and desire to secure by LettcrsPatent, is v r The separate covering of cloth, felt, or similar material, in combination with the enclosed India-rubber article, as and for the purposes set forth.

In witness whereof, I have hereunto set my signature, this 12th day of February, A. D. 1868.

' GEO. M. ALLERTONL Witnesses:

- Guns. E; SMITH,

Q Gno. D. WA KER. 

